Question

one half of a roll of wallpaper covers 1/10 of a wall. how many rolls of wallpaper are needed to cover half the wall

Answer 1

4 more rolls because 1/2 = 5/10.


1/10 is already used. Now you need to find how many 10ths to make the fractions equivalent. You need 4 more.

1/2 = 5/10.

4 more rolls are needed.


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